The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 14, 1995
Filed:
Dec. 03, 1992
Katsuaki Tsurushima, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A disc cleaning device for cleaning a disc on which information signals are pre-recorded or are to be recorded and which is housed within a disc cartridge, is disclosed. The disc cleaning device includes a cartridge holder in which a disc cartridge is loaded. The disc cartridge is the disc accommodated in a cartridge main body. The disc cleaning device also includes a shutter opening unit for moving a shutter member for opening an aperture in the disc cartridge loaded on the cartridge holder, which aperture has been closed by the shutter member. The disc cleaning device also includes a disc rotating and driving unit for rotating the disc housed within the disc cartridge, and a cleaning unit having a cleaning member adapted for being caused to bear on an information recording surface of the disc via the aperture in the disc cartridge.